EP 2882103 B1 20190529 - METHOD AND APPARATUS FOR SHORT CIRCUIT PROTECTION OF POWER SEMICONDUCTOR SWITCH
Title (en)
METHOD AND APPARATUS FOR SHORT CIRCUIT PROTECTION OF POWER SEMICONDUCTOR SWITCH
Title (de)
VERFAHREN UND VORRICHTUNG FÜR KURZSCHLUSSSCHUTZ EINES LEISTUNGSHALBLEITERSCHALTERS
Title (fr)
PROCÉDÉ ET APPAREIL DE PROTECTION CONTRE LES COURTS-CIRCUITS DE COMMUTATEUR À SEMI-CONDUCTEUR DE PUISSANCE
Publication
Application
Priority
EP 13195668 A 20131204
Abstract (en)
[origin: EP2882103A1] The present disclosure presents a method, and an apparatus implementing the method, for a power semiconductor switch, wherein a current through the switch is responsive to a control terminal voltage at a control terminal of the switch, and the control terminal voltage is driven by a driver unit, The method comprises estimating the current on the basis of a bond voltage of the switch, detecting a short circuit by comparing the estimated current to a short circuit current limit, controlling an on-state voltage level of the control terminal voltage on the basis of the comparison in order to limit the current through the switch during the short circuit, and controlling the control terminal voltage to an off-state voltage level in order to turn the switch off. The on-state voltage level voltage is controlled by pulse-width modulating the output of the driver unit. A switching frequency of the modulation is at least the cut-off frequency of low-pass characteristics of the control terminal.
IPC 8 full level
H03K 17/082 (2006.01)
CPC (source: EP US)
H02H 3/08 (2013.01 - US); H03K 17/0822 (2013.01 - EP US)
Citation (examination)
- EP 2469710 A1 20120627 - GEN ELECTRIC [US]
- PRENTICE HALL: "EECS 141 - F01 Lecture 10 Interconnect", 31 December 2000 (2000-12-31), pages 1 - 5, XP055465952, Retrieved from the Internet <URL:http://bwrcs.eecs.berkeley.edu/Classes/icdesign/ee141_f01/Lectures/Lecture10-WireModels-6up.pdf> [retrieved on 20180410]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2882103 A1 20150610; EP 2882103 B1 20190529; CN 104702253 A 20150610; US 2015155700 A1 20150604
DOCDB simple family (application)
EP 13195668 A 20131204; CN 201410720794 A 20141202; US 201414559222 A 20141203